Assistant referee (association football) - Wikipedia
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Your guide to the introduction of Video Assistant Referees
MLS will seek to introduce Video Assistant Referees (VAR) during 2017
History is made as video replay technology is used in an official USL match
Application of Video Technology in Football Refereeing – VAR
Russia 2018: Controversial video assistant refereeing system all set for World Cup debut
Video assistant referees: everything you need to know, Video assistant referees (VARs)
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FIFA World Cup Final 2022 referee: Who is Szymon Marciniak? Facts and stats about the Polish official
Video Assistant Referees - Football can learn from rugby cricket tennis NFL - ESPN
How can Video Assistant Referee system address corruption in football?